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<section id="pppd-compat-examples">
<span id="id1"></span><h1>pppd-compat examples<a class="headerlink" href="#pppd-compat-examples" title="Link to this heading"></a></h1>
<p>Accel-ppp module <code class="docutils literal notranslate"><span class="pre">[pppd-compat]</span></code> is useful to execute scripts when <strong>ip-up|ip-down|ip-change</strong> event for customer’s session occurs.</p>
<p>Examples below show how to put cusomer’s IPv4 & IPv6 to specific ipsets, depending on the value of received RADIUS-attribute named <code class="docutils literal notranslate"><span class="pre">Filter-Id</span></code>. For example, it can be useful if one needs to grant access from <strong>customer ipset</strong> only to <strong>specific ipset</strong>.</p>
<p>Example Accel-ppp configuration:</p>
<div class="highlight-sh notranslate"><div class="highlight"><pre><span></span><span class="o">[</span>modules<span class="o">]</span>
pppd_compat
<span class="o">[</span>pppd-compat<span class="o">]</span>
ip-up<span class="o">=</span>/etc/accel-ppp_ip-up.sh
ip-down<span class="o">=</span>/etc/accel-ppp_ip-down.sh
ip-change<span class="o">=</span>/etc/accel-ppp_ip-up.sh
radattr-prefix<span class="o">=</span>/run/radattr
</pre></div>
</div>
<div class="admonition-note admonition">
<p class="admonition-title">Note:</p>
<p><strong>ipsets</strong> must exist before scripts are executed.</p>
</div>
<p>Example ipsets creation:</p>
<div class="highlight-sh notranslate"><div class="highlight"><pre><span></span><span class="ch">#!/bin/sh</span>
ipset<span class="w"> </span>create<span class="w"> </span>soc_res_v4<span class="w"> </span>hash:net<span class="w"> </span>family<span class="w"> </span>inet
ipset<span class="w"> </span>create<span class="w"> </span>soc_res_v6<span class="w"> </span>hash:net<span class="w"> </span>family<span class="w"> </span>inet6
ipset<span class="w"> </span>create<span class="w"> </span>blk_res_v4<span class="w"> </span>hash:net<span class="w"> </span>family<span class="w"> </span>inet
ipset<span class="w"> </span>create<span class="w"> </span>blk_res_v6<span class="w"> </span>hash:net<span class="w"> </span>family<span class="w"> </span>inet6
ipset<span class="w"> </span>create<span class="w"> </span>blk_usr_v4<span class="w"> </span>hash:ip<span class="w"> </span>family<span class="w"> </span>inet
ipset<span class="w"> </span>create<span class="w"> </span>soc_usr_v6<span class="w"> </span>hash:net<span class="w"> </span>family<span class="w"> </span>inet6
ipset<span class="w"> </span>create<span class="w"> </span>soc_usr_v4<span class="w"> </span>hash:ip<span class="w"> </span>family<span class="w"> </span>inet
ipset<span class="w"> </span>create<span class="w"> </span>blk_usr_v6<span class="w"> </span>hash:net<span class="w"> </span>family<span class="w"> </span>inet6
</pre></div>
</div>
<p>Example /etc/accel-ppp_ip-up.sh script:</p>
<div class="highlight-sh notranslate"><div class="highlight"><pre><span></span><span class="ch">#!/bin/sh</span>
<span class="c1"># Option "Active".</span>
<span class="nv">ACTIVE_FILTER_ID</span><span class="o">=</span><span class="m">1</span>
<span class="c1"># Option "Paysystems".</span>
<span class="nv">BLOCK_SET_V4</span><span class="o">=</span><span class="s1">'blk_usr_v4'</span>
<span class="nv">BLOCK_SET_V6</span><span class="o">=</span><span class="s1">'blk_usr_v6'</span>
<span class="nv">BLOCK_FILTER_ID</span><span class="o">=</span><span class="m">2</span>
<span class="c1"># Option "Social".</span>
<span class="nv">SOCIAL_SET_V4</span><span class="o">=</span><span class="s1">'soc_usr_v4'</span>
<span class="nv">SOCIAL_SET_V6</span><span class="o">=</span><span class="s1">'soc_usr_v6'</span>
<span class="nv">SOCIAL_FILTER_ID</span><span class="o">=</span><span class="m">3</span>
<span class="c1"># argv[5], contains IPv4-address,</span>
<span class="c1"># (https://github.com/xebd/accel-ppp/blob/master/accel-pppd/extra/pppd_compat.c).</span>
<span class="nv">IPV4</span><span class="o">=</span><span class="nv">$5</span>
<span class="c1"># argv[1], contains interface name.</span>
<span class="nv">RADATTR</span><span class="o">=</span><span class="s1">'/run/radattr.'</span><span class="nv">$1</span>
<span class="c1"># Add|delete client's IPv4|IPv6 addresses to a specific ipset.</span>
<span class="c1"># $IPV6_PREFIX and $IPV6_DELEGATED_PREFIX are environment variables of Accel-ppp,</span>
<span class="c1"># (https://github.com/xebd/accel-ppp/blob/master/accel-pppd/extra/pppd_compat.c).</span>
<span class="k">if</span><span class="w"> </span><span class="o">[</span><span class="w"> </span>-f<span class="w"> </span><span class="nv">$RADATTR</span><span class="w"> </span><span class="o">]</span><span class="p">;</span><span class="w"> </span><span class="k">then</span>
<span class="w"> </span><span class="c1"># Get value of "Filter-Id" RADIUS-attribute.</span>
<span class="w"> </span><span class="nv">FILTER_ID</span><span class="o">=</span><span class="k">$(</span>awk<span class="w"> </span><span class="s1">'/Filter-Id/ {print $2}'</span><span class="w"> </span><span class="nv">$RADATTR</span><span class="k">)</span>
<span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="o">[</span><span class="w"> </span><span class="nv">$FILTER_ID</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nv">$ACTIVE_FILTER_ID</span><span class="w"> </span><span class="o">]</span><span class="p">;</span><span class="w"> </span><span class="k">then</span>
<span class="w"> </span>ipset<span class="w"> </span>del<span class="w"> </span><span class="nv">$BLOCK_SET_V4</span><span class="w"> </span><span class="nv">$IPV4</span><span class="w"> </span>-exist<span class="w"> </span>-quiet<span class="w"> </span><span class="p">&</span>><span class="w"> </span>/dev/null
<span class="w"> </span>ipset<span class="w"> </span>del<span class="w"> </span><span class="nv">$SOCIAL_SET_V4</span><span class="w"> </span><span class="nv">$IPV4</span><span class="w"> </span>-exist<span class="w"> </span>-quiet<span class="w"> </span><span class="p">&</span>><span class="w"> </span>/dev/null
<span class="w"> </span>ipset<span class="w"> </span>del<span class="w"> </span><span class="nv">$BLOCK_SET_V6</span><span class="w"> </span><span class="nv">$IPV6_PREFIX</span><span class="w"> </span>-exist<span class="w"> </span>-quiet<span class="w"> </span><span class="p">&</span>><span class="w"> </span>/dev/null
<span class="w"> </span>ipset<span class="w"> </span>del<span class="w"> </span><span class="nv">$SOCIAL_SET_V6</span><span class="w"> </span><span class="nv">$IPV6_PREFIX</span><span class="w"> </span>-exist<span class="w"> </span>-quiet<span class="w"> </span><span class="p">&</span>><span class="w"> </span>/dev/null
<span class="w"> </span>ipset<span class="w"> </span>del<span class="w"> </span><span class="nv">$BLOCK_SET_V6</span><span class="w"> </span><span class="nv">$IPV6_DELEGATED_PREFIX</span><span class="w"> </span>-exist<span class="w"> </span>-quiet<span class="w"> </span><span class="p">&</span>><span class="w"> </span>/dev/null
<span class="w"> </span>ipset<span class="w"> </span>del<span class="w"> </span><span class="nv">$SOCIAL_SET_V6</span><span class="w"> </span><span class="nv">$IPV6_DELEGATED_PREFIX</span><span class="w"> </span>-exist<span class="w"> </span>-quiet<span class="w"> </span><span class="p">&</span>><span class="w"> </span>/dev/null
<span class="w"> </span>logger<span class="w"> </span>-t<span class="w"> </span>ip-change<span class="w"> </span><span class="s2">"Allowed: IPv4 </span><span class="nv">$IPV4</span><span class="s2">, IPv6 </span><span class="nv">$IPV6_PREFIX</span><span class="s2">, IPv6-DP </span><span class="nv">$IPV6_DELEGATED_PREFIX</span><span class="s2">"</span>
<span class="w"> </span><span class="k">elif</span><span class="w"> </span><span class="o">[</span><span class="w"> </span><span class="nv">$FILTER_ID</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nv">$BLOCK_FILTER_ID</span><span class="w"> </span><span class="o">]</span><span class="p">;</span><span class="w"> </span><span class="k">then</span>
<span class="w"> </span>ipset<span class="w"> </span>del<span class="w"> </span><span class="nv">$SOCIAL_SET_V4</span><span class="w"> </span><span class="nv">$IPV4</span><span class="w"> </span>-exist<span class="w"> </span>-quiet<span class="w"> </span><span class="p">&</span>><span class="w"> </span>/dev/null
<span class="w"> </span>ipset<span class="w"> </span>add<span class="w"> </span><span class="nv">$BLOCK_SET_V4</span><span class="w"> </span><span class="nv">$IPV4</span><span class="w"> </span>-exist<span class="w"> </span>-quiet<span class="w"> </span><span class="p">&</span>><span class="w"> </span>/dev/null
<span class="w"> </span>ipset<span class="w"> </span>del<span class="w"> </span><span class="nv">$SOCIAL_SET_V6</span><span class="w"> </span><span class="nv">$IPV6_PREFIX</span><span class="w"> </span>-exist<span class="w"> </span>-quiet<span class="w"> </span><span class="p">&</span>><span class="w"> </span>/dev/null
<span class="w"> </span>ipset<span class="w"> </span>add<span class="w"> </span><span class="nv">$BLOCK_SET_V6</span><span class="w"> </span><span class="nv">$IPV6_PREFIX</span><span class="w"> </span>-exist<span class="w"> </span>-quiet<span class="w"> </span><span class="p">&</span>><span class="w"> </span>/dev/null
<span class="w"> </span>ipset<span class="w"> </span>del<span class="w"> </span><span class="nv">$SOCIAL_SET_V6</span><span class="w"> </span><span class="nv">$IPV6_DELEGATED_PREFIX</span><span class="w"> </span>-exist<span class="w"> </span>-quiet<span class="w"> </span><span class="p">&</span>><span class="w"> </span>/dev/null
<span class="w"> </span>ipset<span class="w"> </span>add<span class="w"> </span><span class="nv">$BLOCK_SET_V6</span><span class="w"> </span><span class="nv">$IPV6_DELEGATED_PREFIX</span><span class="w"> </span>-exist<span class="w"> </span>-quiet<span class="w"> </span><span class="p">&</span>><span class="w"> </span>/dev/null
<span class="w"> </span>logger<span class="w"> </span>-t<span class="w"> </span>ip-change<span class="w"> </span><span class="s2">"Blocked: IPv4 </span><span class="nv">$IPV4</span><span class="s2">, IPv6 </span><span class="nv">$IPV6_PREFIX</span><span class="s2">, IPv6-DP </span><span class="nv">$IPV6_DELEGATED_PREFIX</span><span class="s2">"</span>
<span class="w"> </span><span class="k">elif</span><span class="w"> </span><span class="o">[</span><span class="w"> </span><span class="nv">$FILTER_ID</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nv">$SOCIAL_FILTER_ID</span><span class="w"> </span><span class="o">]</span><span class="p">;</span><span class="w"> </span><span class="k">then</span>
<span class="w"> </span>ipset<span class="w"> </span>del<span class="w"> </span><span class="nv">$BLOCK_SET_V4</span><span class="w"> </span><span class="nv">$IPV4</span><span class="w"> </span>-exist<span class="w"> </span>-quiet<span class="w"> </span><span class="p">&</span>><span class="w"> </span>/dev/null
<span class="w"> </span>ipset<span class="w"> </span>add<span class="w"> </span><span class="nv">$SOCIAL_SET_V4</span><span class="w"> </span><span class="nv">$IPV4</span><span class="w"> </span>-exist<span class="w"> </span>-quiet<span class="w"> </span><span class="p">&</span>><span class="w"> </span>/dev/null
<span class="w"> </span>ipset<span class="w"> </span>del<span class="w"> </span><span class="nv">$BLOCK_SET_V6</span><span class="w"> </span><span class="nv">$IPV6_PREFIX</span><span class="w"> </span>-exist<span class="w"> </span>-quiet<span class="w"> </span><span class="p">&</span>><span class="w"> </span>/dev/null
<span class="w"> </span>ipset<span class="w"> </span>add<span class="w"> </span><span class="nv">$SOCIAL_SET_V6</span><span class="w"> </span><span class="nv">$IPV6_PREFIX</span><span class="w"> </span>-exist<span class="w"> </span>-quiet<span class="w"> </span><span class="p">&</span>><span class="w"> </span>/dev/null
<span class="w"> </span>ipset<span class="w"> </span>del<span class="w"> </span><span class="nv">$BLOCK_SET_V6</span><span class="w"> </span><span class="nv">$IPV6_DELEGATED_PREFIX</span><span class="w"> </span>-exist<span class="w"> </span>-quiet<span class="w"> </span><span class="p">&</span>><span class="w"> </span>/dev/null
<span class="w"> </span>ipset<span class="w"> </span>add<span class="w"> </span><span class="nv">$SOCIAL_SET_V6</span><span class="w"> </span><span class="nv">$IPV6_DELEGATED_PREFIX</span><span class="w"> </span>-exist<span class="w"> </span>-quiet<span class="w"> </span><span class="p">&</span>><span class="w"> </span>/dev/null
<span class="w"> </span>logger<span class="w"> </span>-t<span class="w"> </span>ip-change<span class="w"> </span><span class="s2">"Social: IPv4 </span><span class="nv">$IPV4</span><span class="s2">, IPv6 </span><span class="nv">$IPV6_PREFIX</span><span class="s2">, IPv6-DP </span><span class="nv">$IPV6_DELEGATED_PREFIX</span><span class="s2">"</span>
<span class="w"> </span><span class="k">fi</span>
<span class="k">else</span>
<span class="w"> </span>logger<span class="w"> </span>-t<span class="w"> </span>ip-change<span class="w"> </span><span class="s2">"radattr file not found, </span><span class="nv">$CALLED_SID</span><span class="s2"> </span><span class="nv">$CALLING_SID</span><span class="s2">"</span>
<span class="k">fi</span>
</pre></div>
</div>
<p>Example /etc/accel-ppp_ip-down.sh script:</p>
<div class="highlight-sh notranslate"><div class="highlight"><pre><span></span><span class="ch">#!/bin/sh</span>
<span class="c1"># Option "Blocked".</span>
<span class="nv">BLOCK_SET_V4</span><span class="o">=</span><span class="s1">'blk_usr_v4'</span>
<span class="nv">BLOCK_SET_V6</span><span class="o">=</span><span class="s1">'blk_usr_v6'</span>
<span class="c1"># Option "Social".</span>
<span class="nv">SOCIAL_SET_V4</span><span class="o">=</span><span class="s1">'soc_usr_v4'</span>
<span class="nv">SOCIAL_SET_V6</span><span class="o">=</span><span class="s1">'soc_usr_v6'</span>
<span class="c1"># argv[5], contains IPv4-address,</span>
<span class="c1"># (https://github.com/xebd/accel-ppp/blob/master/accel-pppd/extra/pppd_compat.c).</span>
<span class="nv">IPV4</span><span class="o">=</span><span class="nv">$5</span>
<span class="c1"># Delete customer's IPv4|Pv6 addresses from all ipsets,</span>
<span class="c1"># $IPV6_PREFIX and $IPV6_DELEGATED_PREFIX are environment variables from Accel-ppp,</span>
<span class="c1"># (https://github.com/xebd/accel-ppp/blob/master/accel-pppd/extra/pppd_compat.c).</span>
ipset<span class="w"> </span>del<span class="w"> </span><span class="nv">$BLOCK_SET_V4</span><span class="w"> </span><span class="nv">$IPV4</span><span class="w"> </span>-exist<span class="w"> </span>-quiet<span class="w"> </span><span class="p">&</span>><span class="w"> </span>/dev/null
ipset<span class="w"> </span>del<span class="w"> </span><span class="nv">$SOCIAL_SET_V4</span><span class="w"> </span><span class="nv">$IPV4</span><span class="w"> </span>-exist<span class="w"> </span>-quiet<span class="w"> </span><span class="p">&</span>><span class="w"> </span>/dev/null
ipset<span class="w"> </span>del<span class="w"> </span><span class="nv">$BLOCK_SET_V6</span><span class="w"> </span><span class="nv">$IPV6_PREFIX</span><span class="w"> </span>-exist<span class="w"> </span>-quiet<span class="w"> </span><span class="p">&</span>><span class="w"> </span>/dev/null
ipset<span class="w"> </span>del<span class="w"> </span><span class="nv">$SOCIAL_SET_V6</span><span class="w"> </span><span class="nv">$IPV6_PREFIX</span><span class="w"> </span>-exist<span class="w"> </span>-quiet<span class="w"> </span><span class="p">&</span>><span class="w"> </span>/dev/null
ipset<span class="w"> </span>del<span class="w"> </span><span class="nv">$BLOCK_SET_V6</span><span class="w"> </span><span class="nv">$IPV6_DELEGATED_PREFIX</span><span class="w"> </span>-exist<span class="w"> </span>-quiet<span class="w"> </span><span class="p">&</span>><span class="w"> </span>/dev/null
ipset<span class="w"> </span>del<span class="w"> </span><span class="nv">$SOCIAL_SET_V6</span><span class="w"> </span><span class="nv">$IPV6_DELEGATED_PREFIX</span><span class="w"> </span>-exist<span class="w"> </span>-quiet<span class="w"> </span><span class="p">&</span>><span class="w"> </span>/dev/null
logger<span class="w"> </span>-t<span class="w"> </span>ip-change<span class="w"> </span><span class="s2">"Removing from all ipsets: IPv4 </span><span class="nv">$IPV4</span><span class="s2">, IPv6 </span><span class="nv">$IPV6_PREFIX</span><span class="s2">, IPv6-DP </span><span class="nv">$IPV6_DELEGATED_PREFIX</span><span class="s2">"</span>
</pre></div>
</div>
<p>Example iptables/ipv6tables rules:</p>
<div class="highlight-sh notranslate"><div class="highlight"><pre><span></span>iptables<span class="w"> </span>-t<span class="w"> </span>filter<span class="w"> </span>-A<span class="w"> </span>FORWARD<span class="w"> </span>-m<span class="w"> </span><span class="nb">set</span><span class="w"> </span>--match-set<span class="w"> </span>blk_usr_v4<span class="w"> </span>src<span class="w"> </span>-m<span class="w"> </span><span class="nb">set</span><span class="w"> </span>!<span class="w"> </span>--match-set<span class="w"> </span>blk_res_v4<span class="w"> </span>dst<span class="w"> </span>-j<span class="w"> </span>DROP
iptables<span class="w"> </span>-t<span class="w"> </span>filter<span class="w"> </span>-A<span class="w"> </span>FORWARD<span class="w"> </span>-m<span class="w"> </span><span class="nb">set</span><span class="w"> </span>--match-set<span class="w"> </span>soc_usr_v4<span class="w"> </span>src<span class="w"> </span>-m<span class="w"> </span><span class="nb">set</span><span class="w"> </span>!<span class="w"> </span>--match-set<span class="w"> </span>soc_res_v4<span class="w"> </span>dst<span class="w"> </span>-j<span class="w"> </span>DROP
iptables<span class="w"> </span>-t<span class="w"> </span>filter<span class="w"> </span>-A<span class="w"> </span>FORWARD<span class="w"> </span>-m<span class="w"> </span><span class="nb">set</span><span class="w"> </span>!<span class="w"> </span>--match-set<span class="w"> </span>blk_res_v4<span class="w"> </span>src<span class="w"> </span>-m<span class="w"> </span><span class="nb">set</span><span class="w"> </span>--match-set<span class="w"> </span>blk_usr_v4<span class="w"> </span>dst<span class="w"> </span>-j<span class="w"> </span>DROP
iptables<span class="w"> </span>-t<span class="w"> </span>filter<span class="w"> </span>-A<span class="w"> </span>FORWARD<span class="w"> </span>-m<span class="w"> </span><span class="nb">set</span><span class="w"> </span>!<span class="w"> </span>--match-set<span class="w"> </span>soc_res_v4<span class="w"> </span>src<span class="w"> </span>-m<span class="w"> </span><span class="nb">set</span><span class="w"> </span>--match-set<span class="w"> </span>soc_usr_v4<span class="w"> </span>dst<span class="w"> </span>-j<span class="w"> </span>DROP
ip6tables<span class="w"> </span>-t<span class="w"> </span>filter<span class="w"> </span>-A<span class="w"> </span>FORWARD<span class="w"> </span>-m<span class="w"> </span><span class="nb">set</span><span class="w"> </span>--match-set<span class="w"> </span>blk_usr_v6<span class="w"> </span>src<span class="w"> </span>-m<span class="w"> </span><span class="nb">set</span><span class="w"> </span>!<span class="w"> </span>--match-set<span class="w"> </span>blk_res_v6<span class="w"> </span>dst<span class="w"> </span>-j<span class="w"> </span>DROP
ip6tables<span class="w"> </span>-t<span class="w"> </span>filter<span class="w"> </span>-A<span class="w"> </span>FORWARD<span class="w"> </span>-m<span class="w"> </span><span class="nb">set</span><span class="w"> </span>--match-set<span class="w"> </span>soc_usr_v6<span class="w"> </span>src<span class="w"> </span>-m<span class="w"> </span><span class="nb">set</span><span class="w"> </span>!<span class="w"> </span>--match-set<span class="w"> </span>soc_res_v6<span class="w"> </span>dst<span class="w"> </span>-j<span class="w"> </span>DROP
ip6tables<span class="w"> </span>-t<span class="w"> </span>filter<span class="w"> </span>-A<span class="w"> </span>FORWARD<span class="w"> </span>-m<span class="w"> </span><span class="nb">set</span><span class="w"> </span>!<span class="w"> </span>--match-set<span class="w"> </span>blk_res_v6<span class="w"> </span>src<span class="w"> </span>-m<span class="w"> </span><span class="nb">set</span><span class="w"> </span>--match-set<span class="w"> </span>blk_usr_v6<span class="w"> </span>dst<span class="w"> </span>-j<span class="w"> </span>DROP
ip6tables<span class="w"> </span>-t<span class="w"> </span>filter<span class="w"> </span>-A<span class="w"> </span>FORWARD<span class="w"> </span>-m<span class="w"> </span><span class="nb">set</span><span class="w"> </span>!<span class="w"> </span>--match-set<span class="w"> </span>soc_res_v6<span class="w"> </span>src<span class="w"> </span>-m<span class="w"> </span><span class="nb">set</span><span class="w"> </span>--match-set<span class="w"> </span>soc_usr_v6<span class="w"> </span>dst<span class="w"> </span>-j<span class="w"> </span>DROP
</pre></div>
</div>
</section>
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